paper-source

Arguments:
printer

Returns a keyword indicating the bin from which paper is drawn for
the printer stream. This is typically the value that the end user
chose on the Page Setup or Print dialog, though it may alternately be
passed as an initarg when opening a printer stream with open-stream. The possible
values are :only-one, :lower,
:middle, :manual,
:envelope, :envelope-manual,
:auto, :tractor,
:small-format, :large-format,
:large-capacity, or :cassette.